ISDA

Entry Detail

PDB ID:

6THX

Keywords:

SIGNALING PROTEIN

Title:

IRAK4 in complex with inhibitor

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Spodoptera frugiperda

PDB Version:

Deposition Date:

2019-11-21

Release Date:

2020-10-28

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.99 Å

R-Value Free:

0.25

R-Value Work:

0.23

R-Value Observed:

0.23

Space Group:

I 2 2 2

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Interleukin-1 receptor-associated kinase 4
Chain IDs:A, B
Chain Length:308
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:Q9NWZ3 Pfam ID:PF07714

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
SEP	A	SER	modified residue
TPO	A	THR	modified residue

Ligand Molecules

N9Z

Primary Citation

Improving metabolic stability and removing aldehyde oxidase liability in a 5-azaquinazoline series of IRAK4 inhibitors.

Degorce, S.L, Aagaard, A, Anjum, R, Cumming, I.A, Diene, C.R, Fallan, C, Johnson, T, Leuchowius, K.J, Orton, A.L, Pearson, S, Robb, G.R, Rosen, A, Scarfe, G.B, Scott, J.S, Smith, J.M, Steward, O.R, Terstiege, I, Tucker, M.J, Turner, P, Wilkinson, S.D, Wrigley, G.L, Xue, Y.Show

Bioorg.Med.Chem. 28 115815 115815 (2020)

PMID: 33091850 DOI: 10.1016/j.bmc.2020.115815

Abstact

In this article, we report our efforts towards improving in vitro human clearance in a series of 5-azaquinazolines through a series of C4 truncations and C2 expansions. Extensive DMPK studies enabled us to tackle high Aldehyde Oxidase (AO) metabolism and unexpected discrepancies in human hepatocyte and liver microsomal intrinsic clearance. Our efforts culminated with the discovery of 5-azaquinazoline 35, which also displayed exquisite selectivity for IRAK4, and showed synergistic in vitro activity against MyD88/CD79 double mutant ABC-DLBCL in combination with the covalent BTK inhibitor acalabrutinib.

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Primary Citation of related structures